20 Things You Didn't Know About Star Trek Generations
3. The Nexus Gave Guinan Her "Sixth Sense" In An Early Draft
A fascinating element of Generations' story that was frustratingly removed from the script is the implication that when Guinan enters the Nexus along with some of the other El-Aurians in 2293, this is responsible for developing her famous "sixth sense" to see beyond the bounds of time and space.
This of course runs counter to the assertion from fans of The Next Generation that this is a trait common to the El-Aurians. But it's backed up by the movie's companion comic book, which similarly mentions that Guinan was fundamentally changed by her brief stint in the Nexus.
It's certainly one of the film's more interesting story ideas, and so quite a frustration exclusion.